gh-148211: decompose `_INSERT_1_LOAD_CONST_INLINE(_BORROW)` in JIT #2698

Job	Run time
x86_64-unknown-linux-gnu/gcc	10m 19s
aarch64-unknown-linux-gnu/gcc	7m 25s
aarch64-apple-darwin/clang	11m 52s
x86_64-unknown-linux-gnu/gcc-free-threading	8m 30s
x86_64-apple-darwin/clang	20m 17s
	58m 23s

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